Infiniti Q45. Manual - part 104

PRECAUTIONS

ATC-11

ATC

SERVICE COUPLERS

Never attempt to connect HFC-134a (R-134a) service couplers to a
CFC-12 (R-12) A/C system. The HFC-134a (R-134a) couplers will
not properly connect to the CFC-12 (R-12) system. However, if an
improper connection is attempted, discharging and contamination
may occur.

REFRIGERANT WEIGHT SCALE

Verify that no refrigerant other than HFC-134a (R-134a) and speci-
fied lubricants have been used with the scale. If the scale controls
refrigerant flow electronically, the hose fitting must be 1/2

″

-16

ACME.

CHARGING CYLINDER

Using a charging cylinder is not recommended. Refrigerant may be vented into air from cylinder’s top valve
when filling the cylinder with refrigerant. Also, the accuracy of the cylinder is generally less than that of an
electronic scale or of quality recycle/recharge equipment.

Shut-off valve rotation

A/C service valve

Clockwise

Open

Counterclockwise

RHA273D

RHA274D

ATC-12

PRECAUTIONS

Precautions for Leak Detection Dye

NJS0007P

●

The A/C system contains a fluorescent leak detection dye used for locating refrigerant leaks. An ultraviolet
(UV) lamp is required to illuminate the dye when inspecting for leaks.

●

Always wear fluorescence enhancing UV safety goggles to protect your eyes and enhance the visibility of
the fluorescent dye.

●

The fluorescent dye leak detector is not a replacement for an electronic refrigerant leak detector. The fluo-
rescent dye leak detector should be used in conjunction with an electronic refrigerant leak detector (SST:
J-41995) to pin-point refrigerant leaks.

●

For your safety and your customer’s satisfaction, read and follow all manufacture’s operating instructions
and precautions prior to performing the work.

●

A compressor shaft seal should not be repaired because of dye seepage. The compressor shaft seal
should only be repaired after confirming the leak with an electronic refrigerant leak detector (SST: J-
41995).

●

Always remove any remaining dye from the leak area after repairs are completed to avoid a misdiagnosis
during a future service.

●

Never allow dye to come into contact with painted body panels or interior components. If dye is spilled,
clean immediately with the approved dye cleaner. Fluorescent dye left on a surface for an extended period
of time cannot be removed.

●

Never spray the fluorescent dye cleaning agent on hot surfaces (engine exhaust manifold, etc.).

●

Never use more than one refrigerant dye bottle (1/4 ounce /7.4 cc) per A/C system.

●

Leak detection dyes for HFC-134a (R-134a) and CFC-12 (R-12) A/C systems are different. Never use
HFC-134a (R-134a) leak detection dye in CFC-12 (R-12) A/C system or CFC-12 (R-12) leak detection
dye in HFC-134a (R-134a) A/C system, or A/C system damage may result.

●

The fluorescent properties of the dye will remain for three years or a little over unless a compressor mal-
function occurs.

IDENTIFICATION

NOTE:
Vehicles with factory installed fluorescent dye have a green label.
Vehicles without factory installed fluorescent dye have a blue label.

IDENTIFICATION LABEL FOR VEHICLE

Vehicles with factory installed fluorescent dye have the identification label on the front side of hood.

PREPARATION

ATC-13

ATC

PREPARATION

PFP:00002

Special Service Tools

NJS0007R

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number
(Kent-Moore No.)
Tool name

Description

KV99106100
(J-41260)
Clutch disc wrench

Removing shaft nut and clutch disc

KV99232340
(J-38874)
Clutch disc puller

Removing clutch disc

KV99106200
(J-41261)
Pulley installer

Installing pulley

S-NT232

SJIA1168E

S-NT376

S-NT235

ATC-14

PREPARATION

HFC-134a (R-134a) Service Tools and Equipment

NJS0007S

Never mix HFC-134a (R-134a) refrigerant and/or its specified lubricant with CFC-12 (R-12) refrigerant and/or
its lubricant.
Separate and non-interchangeable service equipment must be used for handling each type of refrigerant/lubri-
cant.
Refrigerant container fittings, service hose fittings and service equipment fittings (equipment which handles
refrigerant and/or lubricant) are different between CFC-12 (R-12) and HFC-134a (R-134a). This is to avoid
mixed use of the refrigerants/lubricant.
Never use adapters that convert one size fitting to another: refrigerant/lubricant contamination will occur and
compressor malfunction will result.

Tool number
(Kent-Moore No.)
Tool name

Description

HFC-134a (R-134a) refrigerant

Container color: Light blue
Container marking: HFC-134a (R-
134a)
Fitting size: Thread size

●

Large container 1/2

″

-16 ACME

( - )
Nissan A/C System Oil Type S
(DH-PS)

Type: Polyalkaline glycol oil (PAG),
type S (DH-PS)
Application: HFC-134a (R-134a)
wobble (swash) plate compressors
(Nissan only)

Capacity: 40 m

(1.4 US fl oz, 1.4 Imp

fl oz)

(ACR2005-NI)
ACR5 A/C Service Center

Function: Refrigerant recovery,
recycling and recharging

(J-41995)
Electrical leak detector

Power supply:
DC 12 V (Battery terminal)

S-NT196

S-NT197

WJIA0293E

AHA281A

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